package com.jxb.myshop.web.servlet.alipay;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.jxb.myshop.common.AlipayConfig;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/alipay")
public class AlipayController extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        try {
            String oid = request.getParameter("oid");
            String ocount = request.getParameter("ocount");
            //获得初始化的AlipayClient
            AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);

            //设置请求参数
            AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
            alipayRequest.setReturnUrl(AlipayConfig.return_url);
            alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

            //商户订单号，商户网站订单系统中唯一订单号，必填
//            String out_trade_no = new String(request.getParameter("WIDout_trade_no").getBytes("ISO-8859-1"),"UTF-8");
            String out_trade_no = oid;
            //付款金额，必填
//            String total_amount = new String(request.getParameter("WIDtotal_amount").getBytes("ISO-8859-1"),"UTF-8");
            String total_amount = ocount;
            //订单名称，必填
//            String subject = new String(request.getParameter("WIDsubject").getBytes("ISO-8859-1"),"UTF-8");
            String subject = oid;
            //商品描述，可空
//            String body = new String(request.getParameter("WIDbody").getBytes("ISO-8859-1"),"UTF-8");
            String body = "小米商品";

            alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
                    + "\"total_amount\":\""+ total_amount +"\","
                    + "\"subject\":\""+ subject +"\","
                    + "\"body\":\""+ body +"\","
                    + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

            //若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
            //alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
            //		+ "\"total_amount\":\""+ total_amount +"\","
            //		+ "\"subject\":\""+ subject +"\","
            //		+ "\"body\":\""+ body +"\","
            //		+ "\"timeout_express\":\"10m\","
            //		+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
            //请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节

            //请求
            String result = alipayClient.pageExecute(alipayRequest).getBody();

            //输出
            response.getWriter().println(result);
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
}
